document.write( "Question 1047032: fred mixed 10 ml of an acidic solution with 9 ml of a 40% acidic solution to make a 41% acidic soultion. find the percent acid concentration of the first solution \n" ); document.write( "

Algebra.Com's Answer #662513 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = % of the 1st solution needed
\n" ); document.write( " $\"+%28+x%2A10+%2B+.4%2A9+%29+%2F+%28+10+%2B+9+%29+=+.41+\"$
\n" ); document.write( " $\"+10x+%2B+3.6+=+.41%2A19+\"$
\n" ); document.write( " $\"+10x+=+7.79+-+3.6+\"$
\n" ); document.write( " $\"+10x+=+4.19+\"$
\n" ); document.write( " $\"+x+=+.419+\"$
\n" ); document.write( "41.9% is the acid concentration of the 1st solution
\n" ); document.write( "-------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+x%2A10+%2B+.4%2A9+%29+%2F+%28+10+%2B+9+%29+=+.41+\"$
\n" ); document.write( " $\"+%28+.419%2A10+%2B+.4%2A9+%29+%2F+%28+10+%2B+9+%29+=+.41+\"$
\n" ); document.write( " $\"+%28+4.19+%2B+3.6+%29+%2F+19+=+.41+\"$
\n" ); document.write( " $\"+7.79+=+.41%2A19+\"$
\n" ); document.write( " $\"+7.79+=+7.79+\"$
\n" ); document.write( "OK \n" ); document.write( "

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